Salary of employees in blockchain exchange
a colleague of mine studied related technology in podcast before. Now the salary is higher than me
What's the most expensive in the 21st century? It could be blockchain talent
Zhang Yan (pseudonym), who graated from a 211 university in Shanghai with a master's degree, began his internship in a blockchain company this summer, mainly responsible for the collection of instry information. During the internship, his salary is 8000 yuan, and after becoming a regular, his monthly salary will reach 22000 yuan
Zhang Yan's starting salary is much higher than that of fresh graates' first employment. According to the statistics of Shanghai human resources and Social Security Bureau, the average monthly salary of college graates with bachelor's degree is 4793 yuan, and that of graates with master's degree or above is 8001 yuan
according to the analysis of instry insiders, at present, there is a high shortage of talents in the instry, few talents meet the recruitment requirements, and the imbalance between supply and demand leads to a high premium of talents. It is expected that in two to three years, when the blockchain technology is applied and fully blossomed, the relationship between supply and demand in the market will enter a stable stage
how expensive are blockchain talents
"our recruitment has not been smooth. We may have 5-8 people in a quarter, which can only reach 20% of our expectation." Deng Xu, the founder of Yunxiang blockchain, has been hoping to rapidly expand the team to a team of 100 technicians, but he is struggling to find suitable talents
recruitment information of a company
"my ideal blockchain talents mainly have two standards, one is computer foundation, the other is algorithm foundation." Deng Xu said
according to Yan Li, founder of computing power think tank, there are three types of blockchain talents:
first, in terms of content research, most of these talents were originally engaged in financial information, traditional research and other jobs, and after one to two months of training, they can start their jobs
the second is proct technology development, which requires mature computer technology talents, such as research on underlying data development, data storage and so on. They need to redistribute their work areas in the blockchain scenario, and they can adapt to the post demand after two to three months
the third is the refiner of proct requirements, which is the most difficult person to find. They need to understand the business logic of blockchain, dig out pain points, and understand technology, so as to connect the customer's needs with the ability of technical developers
Shang Yang, an analyst of yiou think tank, also pointed out to Zhongxin Jingwei that the essence of blockchain is a distributed encrypted database, and the core idea is decentralization. Blockchain is evolved from bitcoin. Before, there were almost no relevant courses in Colleges and universities, so today's practitioners of blockchain technology are mostly self-taught. Objectively, all those with computer professional background have the conditions to learn. But technology is not the key, the key is to find the appropriate application scenarios. Only in a certain scenario, the data distributed storage can be irreplaceable and bring significant benefits to the enterprise, can it be regarded as a good application scenario, so the application on the chain is still in the exploration stage
"there are too few application-oriented talents," Shang Yang said. The application and transformation of any new technology needs a process. At present, many technicians do not understand procts
According to Deng Xu, there are three main reasons for the shortage of talents in blockchain: on the one hand, the popularity of blockchain is fast, while the number of technicians is small, resulting in the imbalance between supply and demand; On the other hand, blockchain is actually a comprehensive technology, including computer language, algorithm, communication, cryptography and so on. At present, talents trained by colleges and universities generally have only one or two aspects of knowledge reserve. In addition, with the popularity of ICO last year, a large number of new blockchain companies were born, further aggravating the imbalance between supply and demand of blockchainwith the fire of blockchain concept, some colleges and universities began to offer courses, and training institutions also entered the market one after another. Yan Li suggests that top universities with science and engineering majors can continue to give full play to their advantages and cultivate talents for blockchain technology application; In terms of business, it still mainly relies on talents from traditional instries; Social organizations, research centers and other institutions can organize vocational training for talents in the blockchain instry, but good vocational training must last two to three months instead of two or three days of "quick" training
However, Deng Xu pointed out that at this stage, training can only supplement some middle and low-end technical talents for the instry, but it can not solve the problem of high-end talents. Shang Yang also pointed out that universities with relevant courses are also facing the problem of retaining teachers“ On the one hand, it's easy to be poached by enterprises. On the other hand, most people who really understand technology and application choose to open their own companies or speculate in money. ""blockchain technology is the closest technology to money, so many people can't concentrate on technology, and the technology is very complex and boring." Deng Xu said
content source observer network
you mean platform trading. Domestic illegal, international and mostly deceptive, you find the well-known ones. There is a special introction to blockchain network. Remember to be legal, otherwise you can't withdraw cash and it's useless to make money.
Let's suppose villagers Lao Wang and Xiao Li. Lao Wang borrowed some money from Xiao Li, who wrote it in an IOU signed by both parties. A few days later, Lao Wang denied the existence of borrowing money and claimed that Xiao Li forged the paper. Xiao Li can't argue because he finds it difficult to prove that Lao Wang actually owes him money
in this example, Lao Wang and Xiao Li are two nodes
now assuming the same scenario, there are many pairs of people trading with each other in the village. The only evidence for each pair is the IOU. If one party fails, it will be difficult to do so. Seeing this scene, the village head came up with a solution. He suggested using a common notebook for the whole village to record all the transactions. Due to the high prestige of the village head, the villagers unanimously decided to let the village head keep this important transaction book. Each transaction, the villagers go to the village head's home, let the village head witness and record, each transaction is written into a notebook, and then safely saved. That notebook can be called a database
because this notebook is very important, the village head locked it in the safe. However, there are always some problems. Sometimes, the village head will accidentally sprinkle ink on the paper, making some transaction records illegible. This is called a single point of failure. The thief knows that there is an important notebook in the safe of the village head's house. He tries his best to steal it. This is called hacking
until one day, the village head's son owed others a lot of money, so the village head secretly deleted his son's debt entry. In this way, the village head's son "does not owe money."
when the villagers knew this, they began to question the fairness and authority of the village head. So some people put forward a new idea:
abolish the power of the village head, which is called decentralization. Let all villagers keep a notebook, and the transaction records are copied and distributed, which is called distributed database. Therefore, if there are n people in the village, there are n notebooks, that is, n nodes. Every time there is a trade between any two people, all the people in the village get together and record it in their notebooks. And no one can cover the sky. This is called decentralization
they also decided that they would never delete the mentioned transactions from their notebooks, which is irreversible. For example, Lao Wang borrowed a sum of money from Xiao Li before, but in the twinkling of an eye, he wants to return the money. Then the transaction book will not delete the previous borrowing record, but write a new repayment record, so there are two records
next, let's try to break this rule. What if we bribe Lao Wang to change his notebook? It's not feasible, because the next time the villagers meet, they find that Lao Wang's notebook is different from everyone else's, so the villagers notice that Lao Wang may be engaged in an indescribable transaction, and decide to abolish Lao Wang's transaction record and kick Lao Wang out of the organization
What if you try to bribe all the villagers? It's too expensive
the characteristic of this model is that greedy people need to pay a lot to attack the rules. He will find it more profitable to follow the rules
a smart child in the village suggested that each transaction data be called "block" and linked into a "chain" in chronological order, which is called blockchain
mines play an important role in supply (reward for calculation proof) and transaction matching. It's very complicated and difficult to calculate
but someone tells you that the price of bitcoin is determined by the cost of the mine. You can laugh and walk away. Ignorance and boldness are contagious.
any investment has certain risks. digital currency is the trend, and the currency circle routine is also very deep. Blind buying is too risky. It's better to consult more professional people before buying
it's not recommended for novices to invest too much money to play. It's better not to play. To tell you the truth, it's all played by institutions, information sources, situation judgment, entry time and exit time, which are not comparable to novices and retail investors. There are nearly ten million coins on hand, but they are just one kind of currency. Once they reach their expectations, they will do it collectively. There are risks in investment, so we need to be more cautious in playing currency
bitcoin is unreliable
musk openly discusses the conversion of assets, but it is only limited to the discussion session, which shows that musk himself is still on the sidelines. We must not buy a lot of bitcoin at this time, otherwise we will suffer losses first, bitcoin is a virtual asset of the network. That is to say, without the Internet, bitcoin would be worthless moreover, the value of bitcoin is like a stock, which is not stable and suitable for asset conversion. It's very likely that the price of bitcoin will drop as soon as the conversion is over and the most important thing is that the bank is responsible for the value of RMB, but no one can be responsible for the value of bitcoin. If bitcoin immediately drops to nothing after the end of asset conversion, no one can be responsible at this time
single precision: the precision of float is 6 significant digits, the range is from - 38th power of 10 to 38th power of 10, float takes up 4 bytes of space
double precision: the precision of double is 15 significant digits, the range is from - 308th power of 10 to 308th power of 10, and double takes up 8 bytes of space.